The _______ of the house will pay the deposit next week.
A. purchase
B. purchaser
C. chase
D. chaser
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神经系统的发生均来源于()
A. 外胚层
B. 中胚层
C. 内胚层
神经管前神经孔闭合时间是()
A. 25天
B. 27天
C. 30天
D. 42天
发育为脑和脊髓的结构是 ();发育为外周神经的结构是 ();
Please write down at least ONE questiononthat thequestion master asked in the video clip?